Standard intent for activity in Android systems

1 displaying contact information based on contact ID [Java]View PlainCopy

1. Intent Intent = new Intent ();
2. Intent.setaction (Intent.action_view); //Show contact information
3. Intent.setdata (Uri.parse ("content://contacts/people/492"));
4. StartActivity (Intent);

2 Display dial-up panel based on contact ID [Java]View PlainCopy

1. Intent Intent = new Intent ();
2. Intent.setaction (intent.action_dial); //Display dial-up panel
3. Intent.setdata (Uri.parse ("content://contacts/people/492"));
4. StartActivity (Intent);

3 Display the dialer panel and display the number on the Dial panel [Java]View PlainCopy

1. Intent Intent = new Intent ();
2. Intent.setaction (Intent.action_view);
3. Intent.setdata (Uri.parse ("tel://15216448315"));
4. StartActivity (Intent);

4 Display the dialer panel and display the number on the Dial panel [Java]View PlainCopy

1. Intent Intent = new Intent ();
2. Intent.setaction (intent.action_dial); //Display the dialer panel and display the number on the Dial panel
3. Intent.setdata (Uri.parse ("tel://15216448315"));
4. StartActivity (Intent);

5 Edit contacts based on the ID of the contact person [Java]View PlainCopy

1. Intent Intent = new Intent ();
2. Intent.setaction (Intent.action_edit); //Edit Contacts
3. Intent.setdata (Uri.parse ("content://contacts/people/492"));
4. StartActivity (Intent);

6 displays a list of contacts and other account contacts for the contact person [Java]View PlainCopy

1. Intent Intent = new Intent ();
2. Intent.setaction (Intent.action_view);
3. Intent.setdata (Uri.parse ("content://contacts/people/"));
4. StartActivity (Intent);

7 Start homescreen [Java]View PlainCopy

1. Intent Intent = new Intent ();
2. Intent.setaction (Intent.action_main); //Start homescreen
3. Intent.addcategory (Intent.category_home);
4. StartActivity (Intent);

8 Select a contact's number and return a URI that represents this number, such as: content://contacts/phones/982 [Java]View PlainCopy

1. Intent Intent = new Intent ();
2. Intent.setaction (intent.action_get_content);
3. Intent.settype ("Vnd.android.cursor.item/phone");
4. Startactivityforresult (Intent, 1);

9 Open multiple Apps Select various types of data to return as URIs. The returned URI can be opened using Contentresolver.openinputstream (URI)
This feature can be used to select attachments in a message
Examples are as follows:
Select a picture and return the URI as CONTENT://MEDIA/EXTERNAL/IMAGES/MEDIA/47
Choose a song that returns a URI of CONTENT://MEDIA/EXTERNAL/AUDIO/MEDIA/51 [Java]View PlainCopy

1. Intent Intent = new Intent ();
2. Intent.setaction (intent.action_get_content);
3. Intent.settype ("*/*");
4. Intent.addcategory (intent.category_openable);
5. Startactivityforresult (Intent, 2);

10 Customizing a Chooser, not using the system's Chooser
The chooser can have its own caption (title)
And you don't have to specify preferences [Java]View PlainCopy

1. intent intent = new  Intent ();   
2. intent.setaction (intent.action_chooser);    
3. intent.putextra (Intent.extra_title,  "My chooser");  
4. Intent.putextra (intent.extra_intent,   
5.          new intent (intent.action_get_content)   
6.         .settype ( "*/*")    
7.         .addcategory (Intent.CATEGORY _openable)   
8.         );   
9.   
10. Startactivityforresult (Intent, 2);   

11 Select activity, the returned activity can be obtained in the Returned Intent.getcomponent () [Java]View PlainCopy

1. Intent Intent = new Intent ();
2. Intent.setaction (intent.action_pick_activity);
3. Intent.putextra (Intent.extra_intent,
4. new Intent (intent.action_get_content)
5. . SetType ("*/*")
6. . Addcategory (Intent.category_openable)
7. );
8. Startactivityforresult (Intent, 3);

12 Start the search, in the following sample code, "ANDROID" is the string to search for
When this code is executed, a list of programs that can be used for searching is displayed in the system's Chooser [Java]View PlainCopy

1. Intent Intent = new Intent ();
2. Intent.setaction (Intent.action_search); //Start Search
3. Intent.putextra (Searchmanager.query, "ANDROID");
4. StartActivity (Intent);

13 Start web Search, in the following sample code, "ANDROID" is the string to search for
When this code is executed, a list of programs that can be used for searching is displayed in the system's chooser, and in general the browsers installed in the system will be displayed [Java]View PlainCopy

1. Intent Intent = new Intent ();
2. Intent.setaction (Intent.action_web_search); //Start Search
3. Intent.putextra (Searchmanager.query, "ANDROID");
4. StartActivity (Intent);

Standard intent for activity in Android systems